Desiccantbox for Spool Center (54 mm)

Desiccant box for use in spool-center. Special design for Creality Hyper PLA RFID spools with size 54 mm (diameter) and 66 mm (depth). Should be printed without support or brim, using PLA. Be aware to use other filament, if you plan to use it in a dryer like Sunlu Filadryer or sth. else. 

Silica grain size should be 1.5 mm or more, because the ventilation slots are 1.0 mm wide.

I was able to reduce humidity in all of my Creality CFS from ~30% to ~15% with 4 of these boxes in 4 spools.